Snails are part and parcel of fishkeeping when you have live plants.
Years ago one of my aquariums had an infestation so bad that looking through the glass into the aquarium was almost impossible
Cut down the feeding...maybe a couple days fasting each week (my fish are not fed every day and they are absolutely fine)
Best ways to get rid of them is get a lettuce leaf, leave it in the aquarium for a few hours and the snails will congregate there, lift the leaf out with snails and chuck it away....or crush the snails, many fish are quite partial to them when freshly squished